The first time we witness terror historically was in the French revolution and as you guys come from the British tradition and I am from conservative Germany we are all basically anti-Jacobins. But in "A Connecticut Yankee in King Arthur’s Court"
Mark Twain pointed out that what we usually call terror is often a response to some quieter, less eruptive, systemic long term-terror:
There were two “Reigns of Terror,” if we would but remember it and consider it; the one wrought murder in hot passion, the other in heartless cold blood; the one lasted mere months, the other had lasted a thousand years; the one inflicted death upon ten thousand persons, the other upon a hundred millions; but our shudders are all for the “horrors” of the minor Terror, the momentary Terror, so to speak; whereas, what is the horror of swift death by the axe, compared with lifelong death from hunger, cold, insult, cruelty, and heart-break? What is swift death by lightning compared with death by slow fire at the stake? A city cemetery could contain the coffins filled by that brief Terror which we have all been so diligently taught to shiver at and mourn over; but all France could hardly contain the coffins filled by that older and real Terror—that unspeakably bitter and awful Terror which none of us has been taught to see in its vastness or pity as it deserves.
Of course in general non-violent resistance to an occupying, terrorizing or unjust force (Jesus of Nazareth, Mahatma Gandhi, Martin Luther King, the `89 revolutions and so on) is preferable to violence. But sometimes it is not possible to do it Thoreau style, sometimes you have to become violent. Like in the case of war it should always be the last option but when you deal with e.g. nazis (French resistance) or Cylons (New Caprica resistance) you cannot do sit-downs on the concrete as the cop who will come along will do more than merely pepper spray you or put you in a cell for one night.
So yeah, I think it is important to not let the term terror be determined by the some Sunnite suicide bombers. These fu*knuts don't deserve to get immortalized via monopolizing a word. Never yield any ground to the enemy.
Back to your main point, I am also a big fan of of conventional family values. But it is not the only form of social bond that can exist between people. Friendship, comradeship, loyalty & leadership, we saw them all in BSG. It was rarely melodramatic or moving on a soap-opera level style ... but real life is neither.